摘要
针对黏性土冻胀性分级指标单一、界限值大,无法反映冻胀影响因素间不确定性的问题,本文在基于可拓云模型在不确定性方面的优点,结合熵值客观赋权方法提出了以取样深度、含水率、干密度、孔隙比和超塑含水率为评价指标的可拓云综合评价模型.该模型可根据实测数据与冻胀风险等级的随机性处理离散化问题,真实反映指标间的模糊性、随机性以及不确定性关系,准确评价黏性土冻胀等级,通过工程案例对该模型的有效性进行了验证.研究结果表明,基于熵值法的可拓云综合评价模型在黏性土冻胀风险评价中的应用是有效的、可行的.
There is a problem that the classification index of frost heave of cohesive soil is single and the limit is large,which cannot reflect the uncertainty among frost heave influencing factors.Based on the advantages of extension cloud model in uncertainty,an extension cloud comprehensive evaluation model which uses sampling depth,water content,dry density,void ratio and super plastic water content as evaluation indexes is proposed through combining the entropy weighting and extension cloud model.The model can deal with the discretization problem according to the randomness of the measured data and the frost heave risk level,truly reflect the fuzziness,randomness and uncertainty relationship between the indexes,and accurately evaluate the frost heave level of cohesive soil.The effectiveness of the model is verified by an engineering case.The results show that the application of extension cloud comprehensive evaluation model based on entropy method in evaluation on frost heave risk of cohesive soil is effective and feasible.
作者
王伟
刘丹娜
王兴
高成梁
夏炜燕
WANG Wei;LIU Dan-na;WANG Xing;GAO Cheng-liang;XIA Wei-yan(School of Civil Engineering,Changchun Institute of Technology,Changchun Jilin 130012;China Communication North Road and Bridge Co.,Ltd.,Beijing 100024,China;School of Prospecting and Surveying,Changchun Institute of Technology,Changchun Jilin 130012)
出处
《控制理论与应用》
EI
CAS
CSCD
北大核心
2022年第5期897-905,共9页
Control Theory & Applications
基金
吉林省教育厅科学技术研究项目(JJKH20220637KJ)
长春工程学院主题基金项目(320200054)资助。
关键词
熵值法
可拓云模型
黏性土
冻胀
风险评价
entropy method
extension cloud theory
cohesive soil
frost heave
risk assessment
作者简介
通信作者:王伟,副教授,硕士生导师,目前研究方向为岩土及地下工程施工风险评价,E-mail:16695496@qq.com,Tel.:+86431-80578537.刘丹娜,高级工程师,目前研究方向为地基土风险等级评价,E-mail:59239881@qq.com;王兴,硕士研究生,目前研究方向为地铁盾构及地下施工技术,E-mail:1661903571@qq.com;高成梁,讲师,目前研究方向为岩土工程病害治理,E-mail:21354341@qq.com;夏炜燕,硕士研究生,目前研究方向为地质灾害治理,E-mail:1587748216@qq.com.
